chore(clippy): drop expect_used quarantine for lading_throttle

CHANGELOG.md

@@ -5,6 +5,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+- Removed the transitional `#![allow(clippy::expect_used)]` quarantine from
+  `lading_throttle`. All `.expect()` sites in that crate are under
+  `#[cfg(test)]` or `#[cfg(kani)]`, so the workspace-level
+  `clippy::expect_used = "deny"` now applies without local overrides.
 - Added `clippy::expect_used = "deny"` to the workspace-level lint set,
   mirroring the existing `clippy::unwrap_used` policy, and set
   `allow-expect-in-tests = true` in `clippy.toml`. Production `.expect()`

lading_throttle/src/lib.rs

@@ -6,9 +6,6 @@
 #![deny(clippy::cargo)]
 #![allow(clippy::cast_precision_loss)]
 #![allow(clippy::multiple_crate_versions)]
-// Quarantine: workspace denies `clippy::expect_used`, but this crate still has
-// production `.expect()` sites awaiting cleanup. Remove once cleaned up.
-#![allow(clippy::expect_used)]
 
 use async_trait::async_trait;
 use serde::{Deserialize, Serialize};